#include "ticker.h"
#include <QtGui>

Ticker::Ticker(QWidget *parent)
    : QWidget(parent)
{
    offset = 0;
    myTimerId = 0;
}

void Ticker::setText(const QString &newText)
{
    myText = newText;
    update();
    updateGeometry();
}

QSize Ticker::sizeHint() const
{
    return fontMetrics().size(0, text());
}

void Ticker::paintEvent(QPaintEvent * /* event */)
{
    QPainter painter(this);

    int textWidth = fontMetrics().width(text());
    if(textWidth < 1)
        return;

    int x = -offset;
    while(x < width())
    {
        painter.drawText(x, 0, textWidth, height(), Qt::AlignLeft | Qt::AlignVCenter, text());
        x += textWidth;
    }

}


void Ticker::showEvent(QShowEvent * /* event */)
{
    myTimerId = startTimer(30);

}


void Ticker::timerEvent(QTimerEvent *event)
{
    if(event->timerId() == myTimerId)
    {
        ++offset;
        if(offset >= fontMetrics().width(text()))
            offset = 0;
        scroll(-1, 0);
    }
    else
    {
        QWidget::timerEvent(event);
    }
}

void Ticker::hideEvent(QHideEvent * /* event */)
{
    killTimer(myTimerId);
    myTimerId = 0;
}
